Measuring device



Feb. 13, 1940. n-z 2,190,597 MEASURING DEVICE Filed Oct. 19, 1938 2 Sheets-Sheet 1 a NVIzjNTOR. Z alwrence Dre/t2 W w @26- ATTORNEYS Feb. '13, 1940. L, D ITZ 2,190,597

MEASURING DEVICE Filed Oct. 19, 1938 2 Sheets-Shet 2 I I l 43 I INVENTQR.

Lawrence flrbtz BY WWW ATTORNEYS Patented Feb. 13, 1940 MEASURING DEVICE Lawrence .Dritz, New York, N. Y., assignor to Dritz-Traum Company, Inc., New York, N. Y.,

a corporation of New York Application October 19, 1938, Serial No. 235,765

4 Claims.

This invention relates to measuring devices particularly designed for measuring elastic thread and to the combination of said measuring device With pneumatic means for feeding the thread into dispensing containers.

Theinvention has in view an elastic thread measuring device and pneumatic means for feeding the thread which includes a fiuid stream acting directly upon the thread to cause the same to be drawn from a spool or other source of supply and over the thread measuring device which is actuated by the feeding movement of the thread and which thread measuring device functions to discontinue the feeding of the thread when a predetermined length has been fed thereover.

The invention further comprehends a thread measuring device provided with manually controlled means for permitting actuation thereof by the feeding of the thread thereover and which means automatically functions to arrest the 'movement of the measuring device and'the feeding of the thread thereover after a predetermined length has been fed through the measuring device.

The invention further provides a measuring device for elastic thread which includes a rotatable measuring element and a swingably mounted guide rotatable on an axis parallel to the axis of the measuring element and under and against which guide the thread is trained and which engages against the measuring element to act as a break when the thread becomes slack so as to avoid overrunning of the thread on the measuring element.

With the foregoing and other objects in view,

reference is now made to the following specification and the accompanying drawings, in which:

Fig. 1 is a View in side elevation of a pneumatic means and a thread measuring device constructed in accordance with the invention, with parts broken away and shown in section to illustrate the underlying structure.

Fig. 2 is an enlarged fragmentary vertical sectional view taken approximately on the line 2-2 I 4 4 of Fig. 2. I

Referring to the drawings by characters of reference, A designates generally a pneumatic means for drawing elastic thread II! from a source of supply and over a measuring device indicated generally by the reference character B and for ejecting the thread into a packaging container indicated by the reference character C.

The pneumatic means A includes a standard I I provided with a horizontally extending thread- 5 ed aperture I2 adjacent the upper end thereof and which communicates substantially centrally thereof with a vertical fluid duct I3 opening through the flanged lower end I4 of the standard I I. A nozzle I 5 is threaded into the forward end of the aperture I2 and is provided with a longitudinally extending bore I6 defining an air vent and a thread dispensing opening, the forward end portion of the nozzle being of conical formation so as to engage within the apertured end ll of the packaging container C for ejecting the thread thereinto and piling the same in indiscriminate and untensioned condition therein.

The opposite end of the aperture'l 2 has threaded therein a screw stud I8 provided with a longitudinally extending bore I9 which aligns with the, I

bore It and which stud is longitudinally adjustable in the aperture I2 so as to vary thespacing of the reduced forward end thereof from the inner end of the bore I6 in the nozzle I5. The 75 bore I6 is of slightly larger diameter than the bore I9 so that the fluidentering the standard I I through the conduit 2| will enter the aperture I2 through the fluid duct I3 and thence be emitted through the bore I6 in surrounding relationship with the thread I0 which is drawn through the bore I9 in the plug l8 and ejected by the fluid stream into the packaging container C.

The measuring device B includes a rotatable disk 22 defining a thread measuring element" which is disposed between a source of supply such as a cone 23 and the pneumatic means A and which is provided with a peripheral V-shaped groove 24in which the thread is trained. The

disk 22 is secured on a shaft 25 journaled forflfl rotation in bearing openings in spaced standards 26 and 21 through which openings the shaft 25 protrudes and has collars 28 secured on the protruding ends thereof to retain theshaft 25 against endwise movement:

In order to provide means for arresting the rotation of the disk 22 upon completion of a predetermined number of revolutions thereof, the shaft 25 is provided with a worm 29 which meshes with a worm wheel 30 secured on the forward F end of a shaft 3| for rotation therewith, which shaft is journaled in a right angularly disposed bracket 32 carried by the standard 26, the shaft 3i protruding through the bearing opening in the said bracket and being provided with a collar 5- 33 for retaining the shaft against endwise move ment. The shaft 3| is disposed below the shaft with the worm wheel rotating in a counterclockwise direction, as indicated by the arrow thereon, in a plane atright angles to the plane of rotation of the disk 22.

The worm wheel 3@ is provided on its forward face adjacent the periphery thereof with a stop pin 34 which once during each revolution of the worm wheel engages against the underside of a detent bar 35 to stop the rotation of the worm wheel 30, the disk 22 and the feeding of the thread over the disk 22 to the pneumatic means A. The detent bar 35 is of rectangular shape in cross sectional configuration and is slidable in a rectangular opening 36 in the standard 26 and has a coiled expansion spring 3! arranged thereon between the headed outer end 38 and the outer face of the standard 26 to normally maintain the inner end of the bar 35 in the path of movement of the stop pin 34. By manually pressing the headed end 38 of the detent bar inwardly against the action of the spring 31, the inner end of the said bar is moved out of engagement with the stop pin 3 to again permit rotation of the worm wheel 39, the stop pin 3% passing outwardly around the oifset inner end 39 of the bar 35 as shown in Fig. l. Upon releasing the detent bar, the spring 3! functions to retract the said bar to again dispose the inner end thereof in the path of movement of the stop pin 34.

.The standards 25 and 2! are mounted on a base 40 which is supported by means of the legs 4i upon a table or other supporting means 42 upon which supporting means M the flanged end it of the pneumatic means A is also supported. The

base all is provided with a forwardly and upwardly directed wire bail 53 having an elongated tube 44 rotatably mounted on the bight portion 45 thereof under and against which tube the thread is trained and guided prior to being drawn into the bore [9 of the pneumatic means A.

In order to avoid overrunning of the thread on the disk 22 when the thread becomes slack, between the pneumatic means A and the measuring device 13, an arm 35 is swingably mounted on a pin 4! in a slot 48 in the forward edge of the standard 2?, and which arm 46 has a rotatablespool 49 mounted for free turning movement on a spindle 5t secured adjacent the outer end thereof. The spindle 59 is disposed in parallel alignment with the shaft 25 and with the spool 49 arranged on'the spindle 56 in front of the disk 22 and under and against which spool the thread H! is trained and guided as the same is drawn towards the pneumatic means A. The drawing of the thread by the pneumatic means A places the thread i0 under tension to swing the arm 46 and the spool 49 upwardly, as shown in Fig. 1, while lessening of the tension in the thread which would cause a slack to occur between the disk 22 and the pneumatic means A will cause the spool as to gravitationally swing against the periphery of the disk 22 to act as a brake to thereby arrest the rotation thereof. The thread H3 is fed from the cone 23 through aligned openings 5i and 52 in the table 62 and base 48 respectively and thence around the disk 22 within the groove-d margin 24 thereof, the same being trained under the spool 48 and the guide A l after which it is drawn through the bore l9 and thence ejected through the bore 25 of the nozzle l5 into the packaging container C, the packaging container C having a plurality of outlet openings 53 for venting the fluid stream of the pneumatic feeding means. It will be understood that the ratio of the diameter of the measuring disk 22 with reference to the worm 29 and worm wheel 30 is such that when the worm wheel makes one complete revolution as controlled by the stop pin, a predetermined length of thread will be fed through the measuring device. In order to provide means for limiting the upward movement of the brake spool 49, an adjustable stop screw 54 is provided on the standard 2? and which is adjustable towards and away from the arm 56. i

What is claimed is:

1. In a device for measuring a predetermined length of elastic thread, a pair of spaced supports, a marginally grooved measuring element mounted on a shaft journaled for rotation in said supports and about which element the thread is trained, a worm carried by said shaft, a rotatable worm wheel meshing with said worm, a stop stud carried by and projecting axially from the worm wheel, a detent normally disposed in the path of movement of said stop stud for automatically arresting the movement of said measuring element and the feeding of said thread upon completion of a single revolution of said worm wheel, said detent being manually shiftable to a position out of the path of said stop stud to permit of rotation of said measuring element, and brake means controlled by the slack in the thread and engageable with the measuring element for pre venting overrunning of the thread.

2. In a device for measuring a predetermined length of elastic thread, a pair of spaced supports,

a marginally grooved measuring element mounted on a shaft journaled for rotation in said supports and about which element the thread is trained, a worm carried by said shaft, a worm wheel rotatably carried by one of said supports and meshing with said worm,-a stop stud carried by and projecting axially from the worm wheel, a spring urged detent bar mounted for sliding movement in an opening in one of said supports and normally disposed in the path of movement of said stop stud for automatically arresting the movement of said grooved member and the feeding of the thread about the same upon completion of a predetermined number of revolutions thereof, said detent bar being manually shiftable against the action of said spring to a position to permit of the rotation of said measuring element, and a swingably mounted brake having a roller rotatable on an axis parallel to the axis of the measuring element and under and against which roller the thread is trained and which roller engages with the measuring element to act as a brake when the thread becomes slack so as to avoid overrunning of the thread on the measuring element.

3. In a device for measuring elastic thread, a marginally grooved measuring element, suction means for drawing the thread over said grooved measuring element, a pair of spaced standards, a shaft journaled for rotation in said standards and on which shaft the marginally grooved measuring element is mounted and rotated therewith by the drawing of the thread thereover, a worm carried by said shaft, a rotatable worm wheel meshing with said worm, and an interchangeable stop and detent means carried respectively bybeing manually shiftable to a position out-ofthe-way of said stop to permit the rotation of said grooved measuring element by the drawing of the thread thereover.

4. In a device for measuring elastic thread, a

marginally grooved measuring element, suction means for drawing thathread' over said grooved measuring element, a shaft'journaled for rotation on which said measuring element is mounted to turn therewith by the drawing of the thread I thereover, a worm carried by said shaft, a rotatable worm Wheel meshing with said worm, a stop stud secured to and projecting axially from measuring element and the drawing of the thread thereover upon completion of a predetermined number of revolutions of said grooved measuring element, said detent to a position out-of-the-way ofsaid stop stud to permit of rotation of said measuring element, and a swingably mounted brake including a roller rotatable on an axis parallel to the axis of the said measuring element and under and against which roller the thread is drawn, and which en gages with the said measuring element to act as a brake when the thread becomes slack so as to avoid overrunning of the thread on the said measuring element.

LAWRENCE DRITZ.

means being shiftable 2 

